Questions tagged [science-based]

For questions that require answers based on hard science, not magic or pseudo-science, but do not require scientific citations. Contrast with the hard-science and reality-check tags. Do not use this tag as the only tag on a question.

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0answers
26 views

What would a planet with a notably high sulfur content but otherwise Earthlike composition be like? [closed]

I'm currently working on making a planet with mostly Earthlike chemistry, but I want to throw something into the mix to make it distinctly different from Earth and most likely uninhabitable to ...
5
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6answers
209 views

How to allow a cylindrical habitat (O'Neill or McKendree) to radiate heat to space?

Background I am trying to find a design for a cylindrical habitat that would allow the enclosed cylinder to radiate heat out to space as does the Earth without using mirrors and windows. Problem In ...
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2answers
161 views

Moving Enceladus to become Earth's Second Moon and its side-effects

If we moved Enceladus (not Europa) into Earth's orbit (ignoring the plausibility of it), and gave it a breathable atmosphere, what effects would it have on the Earth? How would it affect us?
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3answers
303 views

What would the geologic record look like on a planet in the galactic halo?

Imagine an Earth-like planet orbiting a Sun-like star in the inner halo of the Milky Way. As a halo star, it will likely be somewhat metal-poor, having formed early in the life of the galaxy, but ...
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2answers
132 views

Could someone be born mute [closed]

In a story I'm writing, the main character is a mute and I was wondering could someone be either born mute or become mute at a very young age in a medieval setting? Note: magic does not exist in my ...
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1answer
69 views

How does axial tilt affect atmospheric pressure and wind?

I'm working on an earht-like map and I'm having a hard time understanding where to put the high and low pressure zones. Here's some background info first. Axial tilt: 25 degrees Tropics latitude: 25 ...
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3answers
252 views

What evolutionary pressures would lead to Goblins?

A long time ago homo floresiensis split off into two main groups Goblins and Halflings. Now Goblins are an odd little bunch (here's a rough mock up of what a goblin might look like) and I was ...
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2answers
111 views

How much aqua regia should a dragon store?

So, dragons are hexapodal creatures, slightly larger than most draft horses (around 190-200 cm at the withers). Compared to the Quetzalcoatlus, dragons have twice the muscles mass in the pectoral ...
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10answers
2k views

How would a Grey Goo robot compute given that it has no fixed form?

This is something that confuses me with amorphous characters, monsters, robots etc... How do they compute when their particles don't have a fixed form? They are in a sense modular robots only taken to ...
2
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1answer
91 views

Is an extinct volcanic tube marketplace possible

Could people with Iron Age technology possibly dig large holes in volcanic rock on the edges of a lave tube system. Would this be an effective way to run a trade business or to live in an underground ...
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15answers
7k views

How do I explain the long life spans of Elves?

Elves in fantasy are commonly depicted as having long life spans and that applies to my story as well with Elves on average living between 250 and 270 years. The question is how would this work and ...
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3answers
380 views

Happiness is Mandatory

Happiness is mandatory. Unhappiness is treason. Treason is punishable by summary execution. Are you happy, citizen? - Friend computer. Welcome to Beta Complex, the little brother of Alpha Complex. We ...
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2answers
853 views

What evolutionary pressures would lead to Orcs?

In my story Orcs, humans, and a bunch of other fantasy races live along side each other and i'm curious as to what evolutionary pressures would to a group of divergent hominids to evolve into Orcs? ...
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6answers
369 views

“Dragon amongst the sheep” How could a dragon avoid other animals registering him as a threat?

So, one of the less know abilities of dragons here is anivoice. Anivoice allows dragons to communicate with birds, mammals, reptiles, dinosaurs and pterosaurs. Of course, the information, relayed by ...
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3answers
224 views

could these trolls exist?

In a world I’m designing, a group of Homo Habilis or even Australopithecus Afarensis migrated into a northern Scotland environment becoming Trolls. These are not D&D trolls, but something else. I ...
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1answer
95 views

Could the Goliath monster from “Evolve” (the game) feasibly exist

My first quest on this platform was, could the Kraken monster from “Evolve” (the game) feasibly exist, which I planned to follow up with the rest of the playable monsters. Appearance The height of ...
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5answers
309 views

How would a Dyson Swarm transmit energy to the Earth?

The Dyson Swarm is common in sci fi as an energy source, and sometimes also as a powerful weapon. As it is commonly understood, it harnesses the energy of the sun, which stores a vast amount of energy....
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1answer
162 views

Options to keep someone awake against their will? [closed]

I already asked this on Medicine SE and Chemistry SE, but both said this question is dangerous and they can't answer it, and on Chemistry I got a suggestion to ask this here again. It is for a RPG ...
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1answer
159 views

How do donut fish eat?

Imagine a particular species of eel that resembles the shape of a torus or donut. It is capable of generating an alternating electric current in the water as a form of communication between other ...
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4answers
150 views

What would a transplanted organ from a corpse use to gain control of it's host?

Shub Niggarath, the black goat of the woods and mother of the dark young, is a powerful entity that lives in a universe parallel to our own. In this universe, immortal entities exist as abstract ...
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4answers
200 views

Feasibility of Cyborg Trees?

I'm writing a thriller story about a group of explorers who traveled to a distant planet in the hopes of finding intelligent life, when the explorers arrived they discovered a planet that was full of ...
6
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2answers
155 views

Feasibility of leaf scorpions

Recently, I’ve taken a small break to establish a story bound universe, so that these questions can actually prove useful in the future Recently, humanity has discovered a vast earth-like planet, ...
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0answers
53 views

What Kind of Bolide Would Chicxulub Be to Create the Bigger Airburst--Asteroid or Comet?

66 million years ago, something brought an end to the long-established dinosaur empire. The pendulum just kept shifting between an asteroid and a comet, astronomical bolides that actually have ...
5
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1answer
118 views

Does life need to start in water, or can life generate on land, or perhaps in air?

Is it possible that life could come about on land if a planet has a dense atmosphere? (This applies to non-carbon based life as well).
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0answers
34 views

Could human skin be home to chromataphores, like a chamelion's or an octopus's [duplicate]

Could human skin be home to chromataphores, like a chamelion's? I'm assuming a technology advanced enough to create designer organisms, including designer humans. In other words, tech that will be ...
6
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1answer
117 views

The Earth and Moon resolidify under a bluer star, their outer layers evaporated and burned away. What do they look like now?

(This is the third in a series of questions, starting with Moved into further orbits to protect them, how much damage do Earth and Moon take when the Sun expands? and How soon does the Earth's ...
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5answers
160 views

How difficult would it be for medieval people to deal with this acid-breathing dragon? [closed]

Dragons here are six-limbed creatures, roughly the size of a large horse (they tend to be larger than an average draft horse, but much lighter). One of their unique natural weapons is a combination of ...
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3answers
148 views

Feasibility of creatures with long forelimbs?

I'm working on a novel that takes place in a fictional universe which involves creatures with long forelimbs and short hind limbs. Some of these creatures includes amphibians , reptilians and mammals. ...
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2answers
89 views

How long could a plant live in a vacuum chamber [closed]

This was my science fair project that I haven't done yet and all I want to know is how long can a plant live in a vacuum
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3answers
87 views

Creating heat/exciting molecules by controlling their gravity?

Had a character the ability to control the hypothetical Graviton, would it be possible they could move and excite molecules by altering their gravity enough to create heat? Enough for fire? Or is ...
7
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2answers
141 views

Randomly generating plausible star types for a synthetic galaxy?

I'd like to randomly generate between 1 and 20 million stars for a spiral galaxy resembling our Milky Way. This is of course far fewer than our galaxy (estimated between 150 to 300 billion), but I'd ...
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2answers
96 views

Utility-fog wind?

So, I have this draft for a story. It's basically a parody(?) of the fantasy tropes originating from LOTR (the movies) with the twist that we're following the bad guy's lackeys, who he abuses more ...
3
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3answers
129 views

What is a realistic outcome of what will happen to the body if all the flammable materials in the gut spontaneously ignite?

I am writing a story where a person suffers from a medical condition where the gut produces too much of a liquid called diphosphane. Diphosphane is pyrophoric past a certain small concentration, and ...
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11answers
6k views

Is my river map even remotely realistic?

Hello there, it's my first time posting, so I'm sorry if I'm going against formatting. I'm making a continent for a fantasy setting, and have been firstly focusing on geography. This continent should ...
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1answer
136 views

Ways to kill off characters on a spacecraft by freezing them to death? [closed]

Looking for ways to kill characters off while in space. The scenario has a group of people trapped in a section of a spaceship either during or just prior to landing on a planet. Particularly, are ...
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2answers
142 views

The most effective, science-based curse for cursed treasure? [closed]

Backstory There is a dragon who zealously guards a large trove of treasure, despite never being able to use it in any practical way. Usual human thinking would say the dragon is the symbol of greed ...
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1answer
70 views

To what extent could a magic that allows you to change the density of your body work? [closed]

I have in mind this magic system that allows people/animals to change density. Now, from What I understand the denser a thing is the more resistant it is to being damaged or broken. My question ...
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0answers
49 views

What is the feasibility of a chimp-like Reptile? [duplicate]

Would it be possible for reptiles to evolve the anatomy and locomotion of a tree swinging , knuckle walking chimpanzee?
6
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1answer
209 views

Feasibility of tzeentch inspired species

Tzeentch, the weaver of destinies, the architect of fate, originates from the Warhammer 40K universe and is the god of knowledge, change, and evolution. However, I will take away the god like ...
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3answers
720 views

Why do every future relativistic spaceships have an atomic clock?

Set in the not so distant future nearly all commercial, private and military spaceships capable of fractional speed of light travel would always have a time keeping device powered by radioactive ...
4
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2answers
152 views

Feasibility of nurgle inspired species

Nurgle comes from the Warhammer 40K universe, he is described as being the lord of plague or the god of diseases, decay, and destruction. I will, however, take away his god like attributes, and true ...
3
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1answer
108 views

Feasibility of making a quantum destabilizer

In an advanced dystopian future, humanity has made a weapon that is capable of destabilizing quantum particles. This has resulted in the mass death of civilians and has caused massive destruction to ...
4
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2answers
75 views

Possible compositions of a rogue binary system?

I am attempting to construct a world that is primarily lit by light filtered through and reflected off of a crystalline moon so that, at its brightest, the planet receives about the same amount of ...
0
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1answer
107 views

Could these new wormholes be used as a hammer space?

So, if you remember these two questions: What can these negative-mass-free wormholes be used for? and Scientific explanation for summoned creatures , you probably know what I'm talking about. ...
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3answers
148 views

Can I make my drone swarm quieter or Silent?

I have a character that achieves an ability similar to scattering and reforming or elemental swarming by controlling millimetre sized surveillance drones to morph into different shapes or disperse ...
3
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2answers
289 views

Can reptiles evolve like primates?

I'm writing about a fictional world where reptiles evolved and became the dominant species on a planet. on this planet an extinction event never occurred and reptiles still remained the dominant ...
6
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3answers
118 views

How can an environmentally conscious dragon avoid uneccesary damage when using his acidic breath?

So, I decided to up the ante with dragons and make them much more destructive by giving the aqua regia as the breath weapon. The problem is that the dragon in this story is a sweet and cheeky kid, ...
6
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4answers
168 views

What can these negative-mass-free wormholes be used for?

There might be a way to build traversable wormholes without needing negative mass. Take a gander: https://phys.org/news/2019-04-wormholes.html Now, these wormholes have a big limitation, they can't ...
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4answers
166 views

Internal chemistry of a melon bomb

I am a giant, intelligent, fortress-like, plant-based organism, able to forge many structures, defenses and organisms from my flesh by altering my own DNA and rapidly growing new constructs whenever ...
2
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5answers
198 views

How could damage reflection work?

So, there's this guy, Null, named after his ability that allows him to send any action, a person makes, into /dev/null. Basically, he can "No, you didn't" any attack. That's okay, but then comes his ...